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crypto: pcrypt - Fix user-after-free on module unload

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On module unload of pcrypt we must unregister the crypto algorithms
first and then tear down the padata structure.  As otherwise the
crypto algorithms are still alive and can be used while the padata
structure is being freed.

Fixes: 5068c7a883 ("crypto: pcrypt - Add pcrypt crypto...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2019-11-19 17:41:31 +08:00
parent 528c4d1067
commit 07bfd9bdf5
1 changed files with 2 additions and 1 deletions
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3
crypto/pcrypt.c
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@ -362,11 +362,12 @@ static int __init pcrypt_init(void)
static void __exit pcrypt_exit(void)
{
crypto_unregister_template(&pcrypt_tmpl);
pcrypt_fini_padata(pencrypt);
pcrypt_fini_padata(pdecrypt);
kset_unregister(pcrypt_kset);
crypto_unregister_template(&pcrypt_tmpl);
}
subsys_initcall(pcrypt_init);